package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class CategoryServiceImpI implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetMealMapper setMealMapper;

    /**
     * 分页类查询
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuert(categoryPageQueryDTO);

        Long total = page.getTotal();
        List<Category> recodes = page.getResult();

        return new PageResult(total,recodes);
    }

    /**
     * 根据类型查询
     * @param type
     * @return
     */
    @Override
    public List<Category> list(Integer type) {
        List<Category> list = categoryMapper.list(type);
        return list;
    }

    /**
     * 分类新增功能
     * @param categoryDTO
     */
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);

        //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());

        category.setStatus(0);

        //category.setCreateUser(BaseContext.getCurrentId());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.insert(category);
    }

    /**
     * 分类的其启用与禁用
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .build();
        categoryMapper.update(category);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);

        //category.setUpdateTime(LocalDateTime.now());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.update(category);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Long id) {
        //查询菜品分类的下有没有相关菜品
        if(dishMapper.countByCategoryId(id) > 0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        //查询套餐分类下有没有相关的套餐
        if(setMealMapper.countByCategoryId(id) > 0){
            throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        categoryMapper.deleteById(id);
    }
}
